ARP
Ford Ring Compressors

Tapered
Ring Compressors

ARP's new ring compressors are CNC machines from 6061-T6
billet tube material and feature a true radius for each different
bore diameter. What's more, they are relived for wire O-rings
on bottom. Type 3 anodizing is used for long life, and the bore
size is prominently engraved in 3/4" high numbers for easy
identification. Standard stocking sizes from 3.552" to
4.750" (SAE) and 75mm to 100mm (metric). The true radius
design is far superior to conventional "tapered" devices,
and widely acclaimed by professional engine builders! This is
truly the very best piston ring compressor on the market today.